Merge pull request #1111 from NullVoxPopuli/declare-supported-ember-cli-versions

Due to hardcoded ember-cli assumptions around testing, ember-cli version matters

Author: wagenet

README.md

@@ -23,6 +23,7 @@ Requirements
 - TypeScript 4.8 and 4.9
   - SemVer policy: [simple majors](https://www.semver-ts.org/#simple-majors)
   - The public API is defined by the [Usage](#usage) section below.
+* ember-cli ~v4.8.1, ~v4.12.2, >= v5.1
 
 If you need support for Node 14 please use v6.2 of this addon.